How to Replace a Fuel Injector in a Dodge Ram

Determine which fuel injector your Dodge Ram will need. This depends not only on the make and model, but also the engine size. A Dodge Ram made after 2001 may be equipped with a 3.7L, 4.7L, 5.7L Hemi V8, 5.9L Magnum V8, 5.9L Cummins diesel, 6.7L Cummins diesel, 8.0L Magnum or 8.3L Viper engine.

Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. Disconnect the mounting bolts for the fuel rail with a socket wrench and remove the fuel rail from the engine compartment.

Disconnect the retaining clips the hold the fuel injectors to the fuel rail and remove the fuel injectors. Discard the O-rings.

Install the new fuel injectors into the fuel rail and apply a small amount of clean engine oil to the new O-rings. Replace the retaining clips to hold the new fuel injectors in place and mount the fuel rail into the engine. Use a socket wrench to tighten the mounting bolts on the fuel rail. Connect the negative battery cable with a socket wrench.

Use a socket wrench to tighten the mounting bolts on the fuel rail. Connect the negative battery cable with a socket wrench.

Start the engine and check for fuel leaks.